Juan Martin del Potro, from Argentina, returns the ball to Jarkko Nieminen, from Finland, during their first round match at the Rogers Cup tennis tournament in Montreal on Monday, Aug. 8, 2011. (AP ... more 
Juan Martin del Potro, from Argentina, returns the ball to Jarkko Nieminen, from Finland, during their first round match at the Rogers Cup tennis tournament in Montreal on Monday, Aug. 8, 2011. (AP Photo/The Canadian Press, Graham Hughes) less 
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Associated Press | Photo By The Canadian Press, Graham Hughes
Mon, Aug 8, 2011 7:11 PM EDT